有点类似struts
1.建立动态工程后，导入包
在WEB-INF目录下创建 web.xml
配置Spring MVC的入口 DispatcherServlet，把所有的请求都提交到该Servlet
注意：
springmvc这个名字在下一步会用到
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
2.创建springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="simpleUrlHandlerMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/index">indexController</prop>
</props>
</property>
</bean>
<bean id="indexController" class="controller.IndexController"></bean>
</beans>
3.控制类 IndexController
package controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class IndexController implements Controller {
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
ModelAndView mav = new ModelAndView("index.jsp");
mav.addObject("message", "Hello Spring MVC");
return mav;
}
}
4.准备index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" isELIgnored="false"%>
<h1>${message}</h1>
原理图
笔记
implements Controller，这个很像以前javaweb中的servlet ， 负责转发，传达信息
视图定位
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/page/"/>
<property name="suffix" value=".jsp"/>
</bean>
意义
注解
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="controller" />
<bean id="irViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/page/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- <bean id="simpleUrlHandlerMapping" -->
<!-- class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> -->
<!-- <property name="mappings"> -->
<!-- <props> -->
<!-- <prop key="/index">indexController</prop> -->
<!-- </props> -->
<!-- </property> -->
<!-- </bean> -->
<!-- <bean id="indexController" class="controller.IndexController"></bean> -->
</beans>
学习SpringMVC不需要深入了解xml，会用就可以了
=====================================
参数
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import pojo.Product;
@Controller
public class ProductController {
// 控制器ProductController，准备一个add方法映射/addProduct路径
// 为add方法准备一个Product 参数，用于接收注入
// 最后跳转到showProduct页面显示用户提交的数据
@RequestMapping("/addProduct")
public ModelAndView add(Product product) throws Exception{
ModelAndView mav = new ModelAndView("showProduct");
return mav;
}
}
重点
注： addProduct.jsp 提交的name和price会自动注入到参数 product里
注： 参数product会默认被当做值加入到ModelAndView 中，相当于：mav.addObject("product",product);
个人笔记： JSP中的 name="name" name="price" 提交到